I dont know if this helps and i'm not sure if this is the exact type of problem but I got the limp mode light to come on when I drove my car from NJ to Cleveland a month ago. It came on several times. Each time i kept on driving and the light went away. I DO have procede and map 1.45. Apparently map 1.47 corrects that problem. It was harmless, i did not notice any power loss or sputtering or whatever. I'm not sure if you guys have procede or not but it might be worth get the diagnostic tool thing to get the codes before taking the car to the dealer. As a side note, the last time I got the limp light to come on after going over 30mph or so was because of a bad sparkplug in cylinder 4. The car had only 800 miles on it!!! my useless 2 cents